Hydraulic power-transmitting apparatus.



C. R. RADGLIPFE HYDRAULIC POWER TRANSMITTING APPARATUS.

APPLICATION FILED MAY 26, 1913.

Patented Dec. 15, 1914.

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Q "E 3 S EU 11' o i; In s M W A ATTORNEY 0. R. RADGLIFFE. 7

HYDRAULIC POWER TRANSMITTING APPARATUS.

APPLICATION FILED MAY 26, 1913.

1,121,397. Patented Dec. 15,1914.

KWKGZA/W G. R. RADGLIFPE.

HYDRAULIC POWER TRANSMITTING APPARATUS. APPLICATION FILED MAY 26. 19 13. 1,121,397, 7 Patented Dec. 15, 1914.

3 BHEETS SHEET 3.

1 a WITNESSES W l/WE/VTOR 9m 1%,

CARLTON R. RADCLIFFIEL- OF NEW YORK, Nf'Yf HYDRAULIC. POWER-TRANSMITTING- APPARATUS.

To all whom it may concern The present invention relates toi'mprove ments in hydraulic power transmitting ap paratus of the type disclosed in my pend-- ing application for U. S. Letters Patent, Ser. No. 381,342, .filed June 28, 1907. In this application a structure is described comprising a primary turbine wheel, in the form of a centrifugal pump impeller, and a secondary turbine wheel, said wheels, in combination with the inclosing casing, being arranged in such a manner that the energy of the liquid developed in the primary wheel is transmitted to and utilized in said secondary wheel, the casing serving to guide the liquid, leaving the secondary wheel, back to the primary wheel, that is to say to the eye of the impeller.. It is obvious that in devices of this character the working fluid often attains a temperature which is highly detrimental to the efficiency of the device, and some times rises so high that-theoperation of the apparatus: must be entirely stopped in view of the fact that the general temperature of the mechanism is not sub stantially below that of the workingfluid. It has been proposed heretofore to d ssipate the excess of caloric of the working uid by external means, such as for instance air blowers. It has been found, however, that such devices do'not materially reduce the temperature of the working fluid and are, on the other hand, impracticable for the reason that special driving 'means must be provided. Y

One of the objects of the present invention'is to provide a cooling means for the circu'ating fluid of a power transmitting apparatus, which means may be identical with the radiator provided for cooling the water circulating in the water jacket around the cylinders ofthe engine to which the power transmitting apparatus is coupled.

1 Another object of the inventlon is to combine the power transmitting apparatus and the radiator in such a manner that both may be filled with liquid through the inlet to the radiator.

Specification. of Letters Patent.

Patented Dec. 15,1914.

Application filed May 26, 1913. Serial No. 769,942.

With these and other objects in view, Wh1ch will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrangement and construction of parts hereinafter fully described, pointed out in the appended claims and illustrated in the accompanymg drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of theinvention.

Two of the many possible embodiments of the invention are illustrated in the accompanying drawings, in which Figure 1 is a front-elevation of an internal combustion engine joined with a hydraulic, power transmitting apparatus in combination with their common cooling system; Fig. 2 is a vertical central section taken through a hydraulic power transmitting apparatus constructed in accordance with the present invention; and Fig. 3 is a front elevation of a modification of the invention.

Referring now more particularly to Figs.

Water to flow from said water chamber to saidjacket. A return pipe 16'connects the water jacket with the upper water chamber of the radiator. The parts so far described are well known, their operation and functions being well understood.

The hydraulic power transmitting apparatus comprises a primary turbine wheel 17 in the form of a centrifugal pump impeller,

the blades of which are shown in the draw-- ings made integral with an inclosing casing 18, which is attached by screws 19, or'other- Wise, to the crankshaftBO of the internal combustion engine.- The casing is provided with a heavy external ring 21, acting as the fly-wheel of the engine. Within the casing is disposed a secondary turbine wheel 22, that is to say aturbine rotor having the usual blades. This secondary wheel is carried by a web 22, which is attached by screws '23, or otherwise, tea-shaft 24, the

latter being shown in the drawings arranged coaxially with the crankshaft 20. The

shaft 24 is rotatably journaled in ball beara further jo'urnaling means for the shaft 24. a

This stationary bearing is connected by brackets 32. with the frame of the internal combustion engine. The passages 29 in the member 28 lead to openings 33 in the casing 18, such openings being disposed in the eye of the impeller. The compartment 30 communicates through a pipe .34 with the lower water chamber of the radiator. In the web 22' are provided near to the outletsof the radial passages of the secondary wheel one or moreopenings 35, which permit o a flow of the working fluid into; a space 37between the casing and the said web, and thence through a bore. 38 in the shaft 24 toa compartment 39 in the bearing 31, the latter compartment being connected by a pipe 40 v,with the upper water chamber of the'radiat'oi'. Suitable stuffing boxes 41 and 42 are provided,p reventing a leakage of the liquid fromthe passages in the member 28 and froin the compartment 39, respectively. A passage 43 is formed in the member 28, normally closed by a plug 44, said passage leading to, the space between. the bearings 25 and permitting of the introduction of a suitable lubricant into said space. The shaft 24 is connected, preferably by a universal joint 45,,with a shaft 46, the latter being coupled to the'partto be rotated.-

The operation of this device is as follows: The water jacket of the internal combustion engine, the radiator and the hydraulic power transmitting apparatus are filled with the working fluid through the inlet 47 to the radiator. In operation, when the primary turbine wheel, that is to say the centrifugal pump impeller is rotated, the liquid enteringthe eye of the impeller,'is forced toward the periphery through the radial passages formed in said impeller and enters.

the vanes of the turbine wheel, causinga rotation of the latter. The liquid leaving the turbine wheel'is guided back by the web and casing to the eye'of the impeller, to repeat the cycle now described. It is obvious that there is always a partial vacuum at the eye of the impeller, which develops a suction at the'openings' 33, which are in communication through the passages 29 with the pipe 34. Due to this suction, liquid will be drawn from the lower chamber of the radiator into the impeller. On the other hand, a'pres'surefexists' at the opening 35, which willcause liquid to flow into the space 37,

vice.

upper water chamber of the radiator.

trifugal pump impeller, besides imparting rotation to the secondary turbine Wheel, causes a circulatlon of the. working fluid From this it will be observed that the cenv through the radiator, where it is efiectively cooled.

A modification of the invention is illus: trated in Fig. 3 of the drawings, differing from the one above described in that its pipe 34 is connected with the lower water chamber and its pipe 40 with the water jacket, or in other wordsthe water jacket, the power transmitting apparatus and the radiator form'one closed circuit. The water leaving the power transmitting apparatus is forced into the jacket, from there into the radiator, where it is effectively cooled,'and drawn from the radiator into the power transmitting apparatus. In the device shown in Fig. 1 of the drawings two circuits are pro; vided, supplied with liquid from a common source of supply, the flow in one circuit being nduced by the hydraulic power transm tting apparatus and in the other circuit by the pump 15.

It is obvious that, while herein a specific power transmitting apparatus has been descr bed, any other device could be made use of in connectionwith the present invention,

which lies mainly in the provision of means for causing "a circulation of the working fluid through a hydraulic power transmitting apparatus and a suitable cooling means arranged outside of the same, it being possible 'to insert into this'circuit the water jacket of an internal combustion engine which actuates the power transmitting deloo 1. The combination with a hydraulic power transmitting apparatus comprising a casing inclosing two rotatable members, one

of said members being adapted to develop a suction at "a confined area of said casing and the other one a pressure at another consaid apparatus and said radiator.

2. The combination with a hydraulic power transmitting apparatus "comprising a casing inclosing a centrifugal pump im-' 'pelle'r and a turbine rotor, of a radiator, a

pipe connecting the eye of said impeller and the lower water chamber of said radiator, and a pipe connecting the outlet of said turbine rotor with the upper water chamber of said radiator, said radiator and power transmitting apparatus being filled with -a working fluld, the rotation' of said impeller and said turbine rotor inducin a circulation of said fluid through :sai apparatus and said radiator.

3. The combination with a hydraulic power transmitting apparatus comprising" acasing inclosing a centrifugal pump impeller and a turbine rotor,'of a radiator, a

pipe connecting the eye of said impeller and the lower water chamber of said radiator, and a pipe connecting the outlet of 'said turbine rotor with the upper water chamber of said radiator, said radiator and power I transmitting working fluid adapted to be pouredinto the apparatus being filled with a same through the inlet [to said radiator, the rotation of said impeller and said turbine rotor inducing a circulation of said fluid through said apparatus and said radiator. r a

4. The combination with a hydraulic .nected with the eye of said impeller and the lower water chamber-of said radiator, the other one of said comfpartments being connected with the outlet 0 said turbine rotor and with the u per water chamber of said radiator, sai radiator and power transmitting apparatus being filled with a working fluid, the rotation of said lmpelle'r and said turbine rotor causing a circulation of said fluid through said apparatus and said radiator.

Signed at New 'York, in the county of New York,- and State of New York, this 6th day of May, A. D. 1913.

CARLTON R. RADCLIFFE.

Witnesses: SIGMUND I-Iuuzoe,- S. Bun BAUM. 

